Which RPN models have 26 memory keys A to Z?

[rprosperi]

(06-07-2016 03:10 PM)striegel Wrote:  If that turns out to be the problem it can be corrected but you'll have to be somewhat adventurous and willing to remove some plastic to open the machine. See the method for repair of "The HP42S Pioneer" in http://h20331.www2.hp.com/hpsub/download...e_2010.pdf.

Or, you could have it repaired, if this indeed is the problem. Contact Adam Jones (aj04062 on the forum) about the costs, procedure, etc. I can confirm that for Adam's repairs, the case will appear as if it was never opened; your Pioneer will look jus the same as before surgery.